<!--  -->
<template>
  <div>
    <!-- <el-radio-group v-model="isCollapse" style="margin-bottom: 20px">
      <el-radio-button :label="false">展开</el-radio-button>
      <el-radio-button :label="true">收起</el-radio-button>
    </el-radio-group> -->

    <el-menu
      default-active="1-4-1"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"
      :collapse="isCollapse"
      background-color="#545c64"
      text-color="#fff"
      active-text-color="#ffd04b"
    >
      <h3>{{ isCollapse ? "后台" : "通用模板" }}</h3>

      <el-menu-item
        @click="clickMenu(item)"
        v-for="item in noChildren"
        :key="item.name"
        :index="item.name"
      >
        <!-- 这里注意es6字符串拼接语法和符号 -->
        <i :class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{ item.label }}</span>
      </el-menu-item>

      <el-submenu
        v-for="item in hasChildren"
        :key="item.label"
        :index="item.label"
      >
        <template slot="title">
          <i :class="`el-icon-${item.icon}`"></i>
          <span slot="title">{{ item.label }}</span>
        </template>

        <el-menu-item-group
          v-for="subItem in item.children"
          :key="subItem.path"
          :index="subItem.path"
        >
          <el-menu-item @click="clickMenu(subItem)" :index="subItem.path">{{
            subItem.label
          }}</el-menu-item>
        </el-menu-item-group>
      </el-submenu>
    </el-menu>
  </div>
</template>



<script>
import Cookie from 'js-cookie'
export default {
  data() {
    return {
      // isCollapse: false,    //通过计算属性去获取，不能重复定义
      // menuData: [
      //   {
      //     path: "/",
      //     name: "home",
      //     label: "首页",
      //     icon: "s-home",
      //     url: "Home/Home",
      //   },
      //   {
      //     path: "/user",
      //     name: "user",
      //     label: "用户管理",
      //     icon: "user",
      //     url: "UserManage/UserManage",
      //   },
      //   {
      //     path: "/system",
      //     name: "system",
      //     label: "系统管理",
      //     icon: "user",
      //     url: "System/System",
      //   },
      //   {
      //     label: "其他页面",
      //     icon: "location",
      //     children: [
      //       {
      //         path: "/404",
      //         name: "page1",
      //         label: "404",
      //         icon: "setting",
      //         url: "other/404",
      //       },
      //       {
      //         path: "/401",
      //         name: "page2",
      //         label: "401",
      //         icon: "setting",
      //         url: "other/401",
      //       },
      //     ],
      //   },
      // ],
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },

    // 点击菜单
    clickMenu(item) {
      console.log(item);
      // 当页面的路由与跳转的路由不一致才允许跳转
      if (this.$route.path !== item.path &&
        !(this.$route.path === "/home" && item.path === "/")) {
        this.$router.push(item.path);
      }
      this.$store.commit('selectMenu', item)
    },
  },
  computed: {
    noChildren() {
      return this.menuData.filter((item) => !item.children);
    },
    hasChildren(item) {
      return this.menuData.filter((item) => item.children);
    },
    isCollapse() {
      return this.$store.state.tab.isCollapse;
    },
    menuData(){
      return JSON.parse(Cookie.get('menu')) || this.store.state.tab.menu
    }
  },
};
</script>


<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}

.el-menu {
  border-right: none;
  height: 100vh;
  h3 {
    font-size: 16px;
    font-weight: 400;
    color: #fff;
    line-height: 50px;
    text-align: center;
  }
}
</style>